Has this study changed research methods for psychiatric studies as well? I would imagine that these sorts of experiment bias also show up more than reported in drug trials where so much money is on the line provides so much incentive to get the results you want.

There's been a lot of attention in recent years to publication bias in drug trials, where drug companies fund a bunch of studies but only publish the positive results. As a result there was a movement to have all proposed trials registered (I'm not sure if it's a requirement or not) and more recent meta-analyses do tend to include a section looking for publication bias, but it still exists.

There's less of the problem of studies that are fishing for results and then confirming them, because the nature of drug research requires several phases where you have to declare your intention. But when drugs are "fast-tracked" they relax the standards.